fn maybe_align_json2_iters(
schema: SchemaRef,
schemas: Option<Vec<SchemaRef>>,
input_iters: Vec<BoxedRecordBatchIterator>,
) -> Result<(SchemaRef, Vec<BoxedRecordBatchIterator>)>fn maybe_align_json2_iters(
schema: SchemaRef,
schemas: Option<Vec<SchemaRef>>,
input_iters: Vec<BoxedRecordBatchIterator>,
) -> Result<(SchemaRef, Vec<BoxedRecordBatchIterator>)>